Pyrimidine derivatives as hardness stabilizers

A vulcanizable composition comprising a sulfur vulcanizable rubber, a sulfur vulcanizing agent, an accelerating agent selected from the group consisting of non-thiazole sulfenamide accelerators in an amount effective to not substantially inhibit vulcanization and an amount effective to improve the h...

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Bibliographische Detailangaben
Hauptverfasser:	DATTA RABINDRA NATH, MAENDER OTTO WILLIAM, LIN HORNG-JAU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DEVICES OR ARRANGEMENTS RELATED TO TYRES HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TYRE CHANGING OR REPAIRING TYRE INFLATION USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS VEHICLE TYRES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	A vulcanizable composition comprising a sulfur vulcanizable rubber, a sulfur vulcanizing agent, an accelerating agent selected from the group consisting of non-thiazole sulfenamide accelerators in an amount effective to not substantially inhibit vulcanization and an amount effective to improve the hardness stabilization of said rubber upon vulcanization of a hardness stabilization agent comprising a pyrimidine derivative. A method of improving the hardness stabilization of a composition comprising a sulfur vulcanizable rubber by adding to said composition the accelerators and pyrimidine derivative.